var map=new BMap.Map("map");
var point=new BMap.Point(121.263485,31.35242);
var marker=new BMap.Marker(point);
var infoWindow=new BMap.InfoWindow("<p><strong>上海追万网络科技有限公司</strong><br/>电话：021-39921926<br/>地址：    上海市天祝路818弄嘉鼎国际大厦7F</p>");
map.centerAndZoom(point,18);
map.enableScrollWheelZoom(true);
map.addOverlay(marker);
marker.openInfoWindow(infoWindow,point);
marker.setAnimation(BMAP_ANIMATION_BOUNCE);
marker.addEventListener("click",function(){this.openInfoWindow(infoWindow);});